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TPS62403

更新时间： 2024-11-15 04:48:43
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
39页 1320K
描述
2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package

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TPS62403 数据手册

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TPS62400, TPS62401  
TPS62403  
www.ti.com  
SLVS681C–JUNE 2006–REVISED DECEMBER 2006  
2.25MHz 400mA/600mA Dual Step-Down Converter In Small 3x3mm QFN Package  
FEATURES  
DESCRIPTION  
•
•
•
•
•
•
High Efficiency—Up to 95%  
The TPS6240x device series are synchronous dual  
step-down DC-DC converters optimized for battery  
powered portable applications. They provide two  
independent output voltage rails powered by 1-cell  
Li-Ion or 3-cell NiMH/NiCD batteries. The devices are  
also suitable to operate from a standard 3.3V or 5V  
voltage rail.  
VIN Range From 2.5 V to 6 V  
2.25 MHz Fixed Frequency Operation  
Output Current 400 mA and 600 mA  
Adjustable Output Voltage From 0.6V to VIN  
EasyScale™ Optional One-Pin Serial Interface  
for Dynamic Output Voltage Adjustment  
With an input voltage range of 2.5V to 6V the  
TPS62400 is ideal to power portable applications like  
smart phones, PDAs and other portable equipment.  
•
TPS62401, TPS62403 Fixed Output Voltage  
Options  
With the EasyScale™ serial interface the output  
voltages can be modified during operation. The fixed  
output voltage versions TPS62401 and TPS62403  
support one pin controlled simple Dynamic Voltage  
Scaling for low power processors.  
•
•
•
•
Power Save Mode at Light Load Currents  
180° Out of Phase Operation  
Output Voltage Accuracy in PWM Mode ±1%  
Typical 32-µA Quiescent Current for both  
Converters  
The TPS6240x operates at 2.25MHz fixed switching  
frequency and enters the power save mode  
operation at light load currents to maintain high  
efficiency over the entire load current range. For low  
noise applications the devices can be forced into  
fixed frequency PWM mode by pulling the  
MODE/DATA pin high. In the shutdown mode, the  
current consumption is reduced to 1.2µA, typical.  
The devices allow the use of small inductors and  
capacitors to achieve a small solution size.  
•
•
•
100% Duty Cycle for Lowest Dropout  
One Pin Simple Dynamic Voltage Scaling  
Available in a 10-Pin QFN (3×3mm)  
APPLICATIONS  
•
•
•
•
•
•
Cell Phones, Smart-phones  
PDAs, Pocket PCs  
OMAP™ and Low Power DSP Supply  
Portable Media Players  
Digital Radio  
The TPS62400 is available in a 10-pin leadless  
package (3×3mm QFN)  
Digital Cameras  
100  
90  
TPS62401  
VIN 2.5 V – 6 V  
80  
VIN  
FB 1  
2.2 mH  
V
: 1.575 V  
70  
60  
50  
40  
30  
20  
10  
0
V
OUT2  
= 1.8 V  
out1  
400 mA  
10 mF  
SW1  
V
= 3.6 V  
MODE/DATA = 0  
IN  
DEF_1  
10 mF  
V
OUT1  
= 1.575 V  
EN_1  
EN_2  
2.2 mH  
V
: 1.8 V  
SW2  
out2  
600 mA  
MODE/  
DATA  
10 mF  
ADJ2  
GND  
0.01  
0.1  
1
10  
100  
1000  
I
OUT  
mA  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
EasyScale, OMAP, PowerPAD are trademarks of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006, Texas Instruments Incorporated  
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TPS62403 替代型号

型号 品牌 替代类型 描述 数据表
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